A:Answer It is connected to TVs via HDMI so as long as your TV has an available HDMI input port you'll be fine.
You need a PC, phone, or tablet to cast to it via WiFi and you can download the Google Home app to do that so as long as your source device has Google Home installed, you should be able to cast to it. Just make sure the source and the Chromecast devices are connected to the same WiFi network.